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When picking a buffer because one isn't specified by the user, ignore
[tmux.git] / status.c
blob929276d2971f4ad7272b1883433a96e5b97417ca
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/time.h>
21
22 #include <errno.h>
23 #include <limits.h>
24 #include <stdarg.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <time.h>
28 #include <unistd.h>
29
30 #include "tmux.h"
31
32 static void status_message_callback(int, short, void *);
33 static void status_timer_callback(int, short, void *);
34
35 static char *status_prompt_find_history_file(void);
36 static const char *status_prompt_up_history(u_int *, u_int);
37 static const char *status_prompt_down_history(u_int *, u_int);
38 static void status_prompt_add_history(const char *, u_int);
39
40 static char *status_prompt_complete(struct client *, const char *, u_int);
41 static char *status_prompt_complete_window_menu(struct client *,
42 struct session *, const char *, u_int, char);
43
44 struct status_prompt_menu {
45 struct client *c;
46 u_int start;
47 u_int size;
48 char **list;
49 char flag;
50 };
51
52 static const char *prompt_type_strings[] = {
53 "command",
54 "search",
55 "target",
56 "window-target"
57 };
58
59 /* Status prompt history. */
60 char **status_prompt_hlist[PROMPT_NTYPES];
61 u_int status_prompt_hsize[PROMPT_NTYPES];
62
63 /* Find the history file to load/save from/to. */
64 static char *
65 status_prompt_find_history_file(void)
66 {
67 const char *home, *history_file;
68 char *path;
69
70 history_file = options_get_string(global_options, "history-file");
71 if (*history_file == '\0')
72 return (NULL);
73 if (*history_file == '/')
74 return (xstrdup(history_file));
75
76 if (history_file[0] != '~' || history_file[1] != '/')
77 return (NULL);
78 if ((home = find_home()) == NULL)
79 return (NULL);
80 xasprintf(&path, "%s%s", home, history_file + 1);
81 return (path);
82 }
83
84 /* Add loaded history item to the appropriate list. */
85 static void
86 status_prompt_add_typed_history(char *line)
87 {
88 char *typestr;
89 enum prompt_type type = PROMPT_TYPE_INVALID;
90
91 typestr = strsep(&line, ":");
92 if (line != NULL)
93 type = status_prompt_type(typestr);
94 if (type == PROMPT_TYPE_INVALID) {
95 /*
96 * Invalid types are not expected, but this provides backward
97 * compatibility with old history files.
98 */
99 if (line != NULL)
100 *(--line) = ':';
101 status_prompt_add_history(typestr, PROMPT_TYPE_COMMAND);
102 } else
103 status_prompt_add_history(line, type);
104 }
105
106 /* Load status prompt history from file. */
107 void
108 status_prompt_load_history(void)
109 {
110 FILE *f;
111 char *history_file, *line, *tmp;
112 size_t length;
113
114 if ((history_file = status_prompt_find_history_file()) == NULL)
115 return;
116 log_debug("loading history from %s", history_file);
117
118 f = fopen(history_file, "r");
119 if (f == NULL) {
120 log_debug("%s: %s", history_file, strerror(errno));
121 free(history_file);
122 return;
123 }
124 free(history_file);
125
126 for (;;) {
127 if ((line = fgetln(f, &length)) == NULL)
128 break;
129
130 if (length > 0) {
131 if (line[length - 1] == '\n') {
132 line[length - 1] = '\0';
133 status_prompt_add_typed_history(line);
134 } else {
135 tmp = xmalloc(length + 1);
136 memcpy(tmp, line, length);
137 tmp[length] = '\0';
138 status_prompt_add_typed_history(tmp);
139 free(tmp);
140 }
141 }
142 }
143 fclose(f);
144 }
145
146 /* Save status prompt history to file. */
147 void
148 status_prompt_save_history(void)
149 {
150 FILE *f;
151 u_int i, type;
152 char *history_file;
153
154 if ((history_file = status_prompt_find_history_file()) == NULL)
155 return;
156 log_debug("saving history to %s", history_file);
157
158 f = fopen(history_file, "w");
159 if (f == NULL) {
160 log_debug("%s: %s", history_file, strerror(errno));
161 free(history_file);
162 return;
163 }
164 free(history_file);
165
166 for (type = 0; type < PROMPT_NTYPES; type++) {
167 for (i = 0; i < status_prompt_hsize[type]; i++) {
168 fputs(prompt_type_strings[type], f);
169 fputc(':', f);
170 fputs(status_prompt_hlist[type][i], f);
171 fputc('\n', f);
172 }
173 }
174 fclose(f);
175
176 }
177
178 /* Status timer callback. */
179 static void
180 status_timer_callback(__unused int fd, __unused short events, void *arg)
181 {
182 struct client *c = arg;
183 struct session *s = c->session;
184 struct timeval tv;
185
186 evtimer_del(&c->status.timer);
187
188 if (s == NULL)
189 return;
190
191 if (c->message_string == NULL && c->prompt_string == NULL)
192 c->flags |= CLIENT_REDRAWSTATUS;
193
194 timerclear(&tv);
195 tv.tv_sec = options_get_number(s->options, "status-interval");
196
197 if (tv.tv_sec != 0)
198 evtimer_add(&c->status.timer, &tv);
199 log_debug("client %p, status interval %d", c, (int)tv.tv_sec);
200 }
201
202 /* Start status timer for client. */
203 void
204 status_timer_start(struct client *c)
205 {
206 struct session *s = c->session;
207
208 if (event_initialized(&c->status.timer))
209 evtimer_del(&c->status.timer);
210 else
211 evtimer_set(&c->status.timer, status_timer_callback, c);
212
213 if (s != NULL && options_get_number(s->options, "status"))
214 status_timer_callback(-1, 0, c);
215 }
216
217 /* Start status timer for all clients. */
218 void
219 status_timer_start_all(void)
220 {
221 struct client *c;
222
223 TAILQ_FOREACH(c, &clients, entry)
224 status_timer_start(c);
225 }
226
227 /* Update status cache. */
228 void
229 status_update_cache(struct session *s)
230 {
231 s->statuslines = options_get_number(s->options, "status");
232 if (s->statuslines == 0)
233 s->statusat = -1;
234 else if (options_get_number(s->options, "status-position") == 0)
235 s->statusat = 0;
236 else
237 s->statusat = 1;
238 }
239
240 /* Get screen line of status line. -1 means off. */
241 int
242 status_at_line(struct client *c)
243 {
244 struct session *s = c->session;
245
246 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
247 return (-1);
248 if (s->statusat != 1)
249 return (s->statusat);
250 return (c->tty.sy - status_line_size(c));
251 }
252
253 /* Get size of status line for client's session. 0 means off. */
254 u_int
255 status_line_size(struct client *c)
256 {
257 struct session *s = c->session;
258
259 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
260 return (0);
261 if (s == NULL)
262 return (options_get_number(global_s_options, "status"));
263 return (s->statuslines);
264 }
265
266 /* Get window at window list position. */
267 struct style_range *
268 status_get_range(struct client *c, u_int x, u_int y)
269 {
270 struct status_line *sl = &c->status;
271 struct style_range *sr;
272
273 if (y >= nitems(sl->entries))
274 return (NULL);
275 TAILQ_FOREACH(sr, &sl->entries[y].ranges, entry) {
276 if (x >= sr->start && x < sr->end)
277 return (sr);
278 }
279 return (NULL);
280 }
281
282 /* Free all ranges. */
283 static void
284 status_free_ranges(struct style_ranges *srs)
285 {
286 struct style_range *sr, *sr1;
287
288 TAILQ_FOREACH_SAFE(sr, srs, entry, sr1) {
289 TAILQ_REMOVE(srs, sr, entry);
290 free(sr);
291 }
292 }
293
294 /* Save old status line. */
295 static void
296 status_push_screen(struct client *c)
297 {
298 struct status_line *sl = &c->status;
299
300 if (sl->active == &sl->screen) {
301 sl->active = xmalloc(sizeof *sl->active);
302 screen_init(sl->active, c->tty.sx, status_line_size(c), 0);
303 }
304 sl->references++;
305 }
306
307 /* Restore old status line. */
308 static void
309 status_pop_screen(struct client *c)
310 {
311 struct status_line *sl = &c->status;
312
313 if (--sl->references == 0) {
314 screen_free(sl->active);
315 free(sl->active);
316 sl->active = &sl->screen;
317 }
318 }
319
320 /* Initialize status line. */
321 void
322 status_init(struct client *c)
323 {
324 struct status_line *sl = &c->status;
325 u_int i;
326
327 for (i = 0; i < nitems(sl->entries); i++)
328 TAILQ_INIT(&sl->entries[i].ranges);
329
330 screen_init(&sl->screen, c->tty.sx, 1, 0);
331 sl->active = &sl->screen;
332 }
333
334 /* Free status line. */
335 void
336 status_free(struct client *c)
337 {
338 struct status_line *sl = &c->status;
339 u_int i;
340
341 for (i = 0; i < nitems(sl->entries); i++) {
342 status_free_ranges(&sl->entries[i].ranges);
343 free((void *)sl->entries[i].expanded);
344 }
345
346 if (event_initialized(&sl->timer))
347 evtimer_del(&sl->timer);
348
349 if (sl->active != &sl->screen) {
350 screen_free(sl->active);
351 free(sl->active);
352 }
353 screen_free(&sl->screen);
354 }
355
356 /* Draw status line for client. */
357 int
358 status_redraw(struct client *c)
359 {
360 struct status_line *sl = &c->status;
361 struct status_line_entry *sle;
362 struct session *s = c->session;
363 struct screen_write_ctx ctx;
364 struct grid_cell gc;
365 u_int lines, i, n, width = c->tty.sx;
366 int flags, force = 0, changed = 0, fg, bg;
367 struct options_entry *o;
368 union options_value *ov;
369 struct format_tree *ft;
370 char *expanded;
371
372 log_debug("%s enter", __func__);
373
374 /* Shouldn't get here if not the active screen. */
375 if (sl->active != &sl->screen)
376 fatalx("not the active screen");
377
378 /* No status line? */
379 lines = status_line_size(c);
380 if (c->tty.sy == 0 || lines == 0)
381 return (1);
382
383 /* Create format tree. */
384 flags = FORMAT_STATUS;
385 if (c->flags & CLIENT_STATUSFORCE)
386 flags |= FORMAT_FORCE;
387 ft = format_create(c, NULL, FORMAT_NONE, flags);
388 format_defaults(ft, c, NULL, NULL, NULL);
389
390 /* Set up default colour. */
391 style_apply(&gc, s->options, "status-style", ft);
392 fg = options_get_number(s->options, "status-fg");
393 if (!COLOUR_DEFAULT(fg))
394 gc.fg = fg;
395 bg = options_get_number(s->options, "status-bg");
396 if (!COLOUR_DEFAULT(bg))
397 gc.bg = bg;
398 if (!grid_cells_equal(&gc, &sl->style)) {
399 force = 1;
400 memcpy(&sl->style, &gc, sizeof sl->style);
401 }
402
403 /* Resize the target screen. */
404 if (screen_size_x(&sl->screen) != width ||
405 screen_size_y(&sl->screen) != lines) {
406 screen_resize(&sl->screen, width, lines, 0);
407 changed = force = 1;
408 }
409 screen_write_start(&ctx, &sl->screen);
410
411 /* Write the status lines. */
412 o = options_get(s->options, "status-format");
413 if (o == NULL) {
414 for (n = 0; n < width * lines; n++)
415 screen_write_putc(&ctx, &gc, ' ');
416 } else {
417 for (i = 0; i < lines; i++) {
418 screen_write_cursormove(&ctx, 0, i, 0);
419
420 ov = options_array_get(o, i);
421 if (ov == NULL) {
422 for (n = 0; n < width; n++)
423 screen_write_putc(&ctx, &gc, ' ');
424 continue;
425 }
426 sle = &sl->entries[i];
427
428 expanded = format_expand_time(ft, ov->string);
429 if (!force &&
430 sle->expanded != NULL &&
431 strcmp(expanded, sle->expanded) == 0) {
432 free(expanded);
433 continue;
434 }
435 changed = 1;
436
437 for (n = 0; n < width; n++)
438 screen_write_putc(&ctx, &gc, ' ');
439 screen_write_cursormove(&ctx, 0, i, 0);
440
441 status_free_ranges(&sle->ranges);
442 format_draw(&ctx, &gc, width, expanded, &sle->ranges,
443 0);
444
445 free(sle->expanded);
446 sle->expanded = expanded;
447 }
448 }
449 screen_write_stop(&ctx);
450
451 /* Free the format tree. */
452 format_free(ft);
453
454 /* Return if the status line has changed. */
455 log_debug("%s exit: force=%d, changed=%d", __func__, force, changed);
456 return (force || changed);
457 }
458
459 /* Set a status line message. */
460 void
461 status_message_set(struct client *c, int delay, int ignore_styles,
462 int ignore_keys, const char *fmt, ...)
463 {
464 struct timeval tv;
465 va_list ap;
466
467 status_message_clear(c);
468 status_push_screen(c);
469
470 va_start(ap, fmt);
471 xvasprintf(&c->message_string, fmt, ap);
472 va_end(ap);
473
474 server_add_message("%s message: %s", c->name, c->message_string);
475
476 /*
477 * With delay -1, the display-time option is used; zero means wait for
478 * key press; more than zero is the actual delay time in milliseconds.
479 */
480 if (delay == -1)
481 delay = options_get_number(c->session->options, "display-time");
482 if (delay > 0) {
483 tv.tv_sec = delay / 1000;
484 tv.tv_usec = (delay % 1000) * 1000L;
485
486 if (event_initialized(&c->message_timer))
487 evtimer_del(&c->message_timer);
488 evtimer_set(&c->message_timer, status_message_callback, c);
489
490 evtimer_add(&c->message_timer, &tv);
491 }
492
493 if (delay != 0)
494 c->message_ignore_keys = ignore_keys;
495 c->message_ignore_styles = ignore_styles;
496
497 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
498 c->flags |= CLIENT_REDRAWSTATUS;
499 }
500
501 /* Clear status line message. */
502 void
503 status_message_clear(struct client *c)
504 {
505 if (c->message_string == NULL)
506 return;
507
508 free(c->message_string);
509 c->message_string = NULL;
510
511 if (c->prompt_string == NULL)
512 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
513 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
514
515 status_pop_screen(c);
516 }
517
518 /* Clear status line message after timer expires. */
519 static void
520 status_message_callback(__unused int fd, __unused short event, void *data)
521 {
522 struct client *c = data;
523
524 status_message_clear(c);
525 }
526
527 /* Draw client message on status line of present else on last line. */
528 int
529 status_message_redraw(struct client *c)
530 {
531 struct status_line *sl = &c->status;
532 struct screen_write_ctx ctx;
533 struct session *s = c->session;
534 struct screen old_screen;
535 size_t len;
536 u_int lines, offset;
537 struct grid_cell gc;
538 struct format_tree *ft;
539
540 if (c->tty.sx == 0 || c->tty.sy == 0)
541 return (0);
542 memcpy(&old_screen, sl->active, sizeof old_screen);
543
544 lines = status_line_size(c);
545 if (lines <= 1)
546 lines = 1;
547 screen_init(sl->active, c->tty.sx, lines, 0);
548
549 len = screen_write_strlen("%s", c->message_string);
550 if (len > c->tty.sx)
551 len = c->tty.sx;
552
553 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
554 style_apply(&gc, s->options, "message-style", ft);
555 format_free(ft);
556
557 screen_write_start(&ctx, sl->active);
558 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines - 1);
559 screen_write_cursormove(&ctx, 0, lines - 1, 0);
560 for (offset = 0; offset < c->tty.sx; offset++)
561 screen_write_putc(&ctx, &gc, ' ');
562 screen_write_cursormove(&ctx, 0, lines - 1, 0);
563 if (c->message_ignore_styles)
564 screen_write_nputs(&ctx, len, &gc, "%s", c->message_string);
565 else
566 format_draw(&ctx, &gc, c->tty.sx, c->message_string, NULL, 0);
567 screen_write_stop(&ctx);
568
569 if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
570 screen_free(&old_screen);
571 return (0);
572 }
573 screen_free(&old_screen);
574 return (1);
575 }
576
577 /* Enable status line prompt. */
578 void
579 status_prompt_set(struct client *c, struct cmd_find_state *fs,
580 const char *msg, const char *input, prompt_input_cb inputcb,
581 prompt_free_cb freecb, void *data, int flags, enum prompt_type prompt_type)
582 {
583 struct format_tree *ft;
584 char *tmp;
585
586 if (fs != NULL)
587 ft = format_create_from_state(NULL, c, fs);
588 else
589 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
590
591 if (input == NULL)
592 input = "";
593 if (flags & PROMPT_NOFORMAT)
594 tmp = xstrdup(input);
595 else
596 tmp = format_expand_time(ft, input);
597
598 status_message_clear(c);
599 status_prompt_clear(c);
600 status_push_screen(c);
601
602 c->prompt_string = format_expand_time(ft, msg);
603
604 if (flags & PROMPT_INCREMENTAL) {
605 c->prompt_last = xstrdup(tmp);
606 c->prompt_buffer = utf8_fromcstr("");
607 } else {
608 c->prompt_last = NULL;
609 c->prompt_buffer = utf8_fromcstr(tmp);
610 }
611 c->prompt_index = utf8_strlen(c->prompt_buffer);
612
613 c->prompt_inputcb = inputcb;
614 c->prompt_freecb = freecb;
615 c->prompt_data = data;
616
617 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
618
619 c->prompt_flags = flags;
620 c->prompt_type = prompt_type;
621 c->prompt_mode = PROMPT_ENTRY;
622
623 if (~flags & PROMPT_INCREMENTAL)
624 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
625 c->flags |= CLIENT_REDRAWSTATUS;
626
627 if (flags & PROMPT_INCREMENTAL)
628 c->prompt_inputcb(c, c->prompt_data, "=", 0);
629
630 free(tmp);
631 format_free(ft);
632 }
633
634 /* Remove status line prompt. */
635 void
636 status_prompt_clear(struct client *c)
637 {
638 if (c->prompt_string == NULL)
639 return;
640
641 if (c->prompt_freecb != NULL && c->prompt_data != NULL)
642 c->prompt_freecb(c->prompt_data);
643
644 free(c->prompt_last);
645 c->prompt_last = NULL;
646
647 free(c->prompt_string);
648 c->prompt_string = NULL;
649
650 free(c->prompt_buffer);
651 c->prompt_buffer = NULL;
652
653 free(c->prompt_saved);
654 c->prompt_saved = NULL;
655
656 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
657 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
658
659 status_pop_screen(c);
660 }
661
662 /* Update status line prompt with a new prompt string. */
663 void
664 status_prompt_update(struct client *c, const char *msg, const char *input)
665 {
666 struct format_tree *ft;
667 char *tmp;
668
669 ft = format_create(c, NULL, FORMAT_NONE, 0);
670 format_defaults(ft, c, NULL, NULL, NULL);
671
672 tmp = format_expand_time(ft, input);
673
674 free(c->prompt_string);
675 c->prompt_string = format_expand_time(ft, msg);
676
677 free(c->prompt_buffer);
678 c->prompt_buffer = utf8_fromcstr(tmp);
679 c->prompt_index = utf8_strlen(c->prompt_buffer);
680
681 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
682
683 c->flags |= CLIENT_REDRAWSTATUS;
684
685 free(tmp);
686 format_free(ft);
687 }
688
689 /* Draw client prompt on status line of present else on last line. */
690 int
691 status_prompt_redraw(struct client *c)
692 {
693 struct status_line *sl = &c->status;
694 struct screen_write_ctx ctx;
695 struct session *s = c->session;
696 struct screen old_screen;
697 u_int i, lines, offset, left, start, width;
698 u_int pcursor, pwidth;
699 struct grid_cell gc, cursorgc;
700 struct format_tree *ft;
701
702 if (c->tty.sx == 0 || c->tty.sy == 0)
703 return (0);
704 memcpy(&old_screen, sl->active, sizeof old_screen);
705
706 lines = status_line_size(c);
707 if (lines <= 1)
708 lines = 1;
709 screen_init(sl->active, c->tty.sx, lines, 0);
710
711 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
712 if (c->prompt_mode == PROMPT_COMMAND)
713 style_apply(&gc, s->options, "message-command-style", ft);
714 else
715 style_apply(&gc, s->options, "message-style", ft);
716 format_free(ft);
717
718 memcpy(&cursorgc, &gc, sizeof cursorgc);
719 cursorgc.attr ^= GRID_ATTR_REVERSE;
720
721 start = format_width(c->prompt_string);
722 if (start > c->tty.sx)
723 start = c->tty.sx;
724
725 screen_write_start(&ctx, sl->active);
726 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines - 1);
727 screen_write_cursormove(&ctx, 0, lines - 1, 0);
728 for (offset = 0; offset < c->tty.sx; offset++)
729 screen_write_putc(&ctx, &gc, ' ');
730 screen_write_cursormove(&ctx, 0, lines - 1, 0);
731 format_draw(&ctx, &gc, start, c->prompt_string, NULL, 0);
732 screen_write_cursormove(&ctx, start, lines - 1, 0);
733
734 left = c->tty.sx - start;
735 if (left == 0)
736 goto finished;
737
738 pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index);
739 pwidth = utf8_strwidth(c->prompt_buffer, -1);
740 if (pcursor >= left) {
741 /*
742 * The cursor would be outside the screen so start drawing
743 * with it on the right.
744 */
745 offset = (pcursor - left) + 1;
746 pwidth = left;
747 } else
748 offset = 0;
749 if (pwidth > left)
750 pwidth = left;
751 c->prompt_cursor = start + c->prompt_index - offset;
752
753 width = 0;
754 for (i = 0; c->prompt_buffer[i].size != 0; i++) {
755 if (width < offset) {
756 width += c->prompt_buffer[i].width;
757 continue;
758 }
759 if (width >= offset + pwidth)
760 break;
761 width += c->prompt_buffer[i].width;
762 if (width > offset + pwidth)
763 break;
764
765 if (i != c->prompt_index) {
766 utf8_copy(&gc.data, &c->prompt_buffer[i]);
767 screen_write_cell(&ctx, &gc);
768 } else {
769 utf8_copy(&cursorgc.data, &c->prompt_buffer[i]);
770 screen_write_cell(&ctx, &cursorgc);
771 }
772 }
773 if (sl->active->cx < screen_size_x(sl->active) && c->prompt_index >= i)
774 screen_write_putc(&ctx, &cursorgc, ' ');
775
776 finished:
777 screen_write_stop(&ctx);
778
779 if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
780 screen_free(&old_screen);
781 return (0);
782 }
783 screen_free(&old_screen);
784 return (1);
785 }
786
787 /* Is this a separator? */
788 static int
789 status_prompt_in_list(const char *ws, const struct utf8_data *ud)
790 {
791 if (ud->size != 1 || ud->width != 1)
792 return (0);
793 return (strchr(ws, *ud->data) != NULL);
794 }
795
796 /* Is this a space? */
797 static int
798 status_prompt_space(const struct utf8_data *ud)
799 {
800 if (ud->size != 1 || ud->width != 1)
801 return (0);
802 return (*ud->data == ' ');
803 }
804
805 /*
806 * Translate key from vi to emacs. Return 0 to drop key, 1 to process the key
807 * as an emacs key; return 2 to append to the buffer.
808 */
809 static int
810 status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
811 {
812 if (c->prompt_mode == PROMPT_ENTRY) {
813 switch (key) {
814 case '\001': /* C-a */
815 case '\003': /* C-c */
816 case '\005': /* C-e */
817 case '\007': /* C-g */
818 case '\010': /* C-h */
819 case '\011': /* Tab */
820 case '\013': /* C-k */
821 case '\016': /* C-n */
822 case '\020': /* C-p */
823 case '\024': /* C-t */
824 case '\025': /* C-u */
825 case '\027': /* C-w */
826 case '\031': /* C-y */
827 case '\n':
828 case '\r':
829 case KEYC_LEFT|KEYC_CTRL:
830 case KEYC_RIGHT|KEYC_CTRL:
831 case KEYC_BSPACE:
832 case KEYC_DC:
833 case KEYC_DOWN:
834 case KEYC_END:
835 case KEYC_HOME:
836 case KEYC_LEFT:
837 case KEYC_RIGHT:
838 case KEYC_UP:
839 *new_key = key;
840 return (1);
841 case '\033': /* Escape */
842 c->prompt_mode = PROMPT_COMMAND;
843 c->flags |= CLIENT_REDRAWSTATUS;
844 return (0);
845 }
846 *new_key = key;
847 return (2);
848 }
849
850 switch (key) {
851 case KEYC_BSPACE:
852 *new_key = KEYC_LEFT;
853 return (1);
854 case 'A':
855 case 'I':
856 case 'C':
857 case 's':
858 case 'a':
859 c->prompt_mode = PROMPT_ENTRY;
860 c->flags |= CLIENT_REDRAWSTATUS;
861 break; /* switch mode and... */
862 case 'S':
863 c->prompt_mode = PROMPT_ENTRY;
864 c->flags |= CLIENT_REDRAWSTATUS;
865 *new_key = '\025'; /* C-u */
866 return (1);
867 case 'i':
868 case '\033': /* Escape */
869 c->prompt_mode = PROMPT_ENTRY;
870 c->flags |= CLIENT_REDRAWSTATUS;
871 return (0);
872 }
873
874 switch (key) {
875 case 'A':
876 case '$':
877 *new_key = KEYC_END;
878 return (1);
879 case 'I':
880 case '0':
881 case '^':
882 *new_key = KEYC_HOME;
883 return (1);
884 case 'C':
885 case 'D':
886 *new_key = '\013'; /* C-k */
887 return (1);
888 case KEYC_BSPACE:
889 case 'X':
890 *new_key = KEYC_BSPACE;
891 return (1);
892 case 'b':
893 *new_key = 'b'|KEYC_META;
894 return (1);
895 case 'B':
896 *new_key = 'B'|KEYC_VI;
897 return (1);
898 case 'd':
899 *new_key = '\025'; /* C-u */
900 return (1);
901 case 'e':
902 *new_key = 'e'|KEYC_VI;
903 return (1);
904 case 'E':
905 *new_key = 'E'|KEYC_VI;
906 return (1);
907 case 'w':
908 *new_key = 'w'|KEYC_VI;
909 return (1);
910 case 'W':
911 *new_key = 'W'|KEYC_VI;
912 return (1);
913 case 'p':
914 *new_key = '\031'; /* C-y */
915 return (1);
916 case 'q':
917 *new_key = '\003'; /* C-c */
918 return (1);
919 case 's':
920 case KEYC_DC:
921 case 'x':
922 *new_key = KEYC_DC;
923 return (1);
924 case KEYC_DOWN:
925 case 'j':
926 *new_key = KEYC_DOWN;
927 return (1);
928 case KEYC_LEFT:
929 case 'h':
930 *new_key = KEYC_LEFT;
931 return (1);
932 case 'a':
933 case KEYC_RIGHT:
934 case 'l':
935 *new_key = KEYC_RIGHT;
936 return (1);
937 case KEYC_UP:
938 case 'k':
939 *new_key = KEYC_UP;
940 return (1);
941 case '\010' /* C-h */:
942 case '\003' /* C-c */:
943 case '\n':
944 case '\r':
945 return (1);
946 }
947 return (0);
948 }
949
950 /* Paste into prompt. */
951 static int
952 status_prompt_paste(struct client *c)
953 {
954 struct paste_buffer *pb;
955 const char *bufdata;
956 size_t size, n, bufsize;
957 u_int i;
958 struct utf8_data *ud, *udp;
959 enum utf8_state more;
960
961 size = utf8_strlen(c->prompt_buffer);
962 if (c->prompt_saved != NULL) {
963 ud = c->prompt_saved;
964 n = utf8_strlen(c->prompt_saved);
965 } else {
966 if ((pb = paste_get_top(NULL)) == NULL)
967 return (0);
968 bufdata = paste_buffer_data(pb, &bufsize);
969 ud = xreallocarray(NULL, bufsize + 1, sizeof *ud);
970 udp = ud;
971 for (i = 0; i != bufsize; /* nothing */) {
972 more = utf8_open(udp, bufdata[i]);
973 if (more == UTF8_MORE) {
974 while (++i != bufsize && more == UTF8_MORE)
975 more = utf8_append(udp, bufdata[i]);
976 if (more == UTF8_DONE) {
977 udp++;
978 continue;
979 }
980 i -= udp->have;
981 }
982 if (bufdata[i] <= 31 || bufdata[i] >= 127)
983 break;
984 utf8_set(udp, bufdata[i]);
985 udp++;
986 i++;
987 }
988 udp->size = 0;
989 n = udp - ud;
990 }
991 if (n == 0)
992 return (0);
993
994 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + n + 1,
995 sizeof *c->prompt_buffer);
996 if (c->prompt_index == size) {
997 memcpy(c->prompt_buffer + c->prompt_index, ud,
998 n * sizeof *c->prompt_buffer);
999 c->prompt_index += n;
1000 c->prompt_buffer[c->prompt_index].size = 0;
1001 } else {
1002 memmove(c->prompt_buffer + c->prompt_index + n,
1003 c->prompt_buffer + c->prompt_index,
1004 (size + 1 - c->prompt_index) * sizeof *c->prompt_buffer);
1005 memcpy(c->prompt_buffer + c->prompt_index, ud,
1006 n * sizeof *c->prompt_buffer);
1007 c->prompt_index += n;
1008 }
1009
1010 if (ud != c->prompt_saved)
1011 free(ud);
1012 return (1);
1013 }
1014
1015 /* Finish completion. */
1016 static int
1017 status_prompt_replace_complete(struct client *c, const char *s)
1018 {
1019 char word[64], *allocated = NULL;
1020 size_t size, n, off, idx, used;
1021 struct utf8_data *first, *last, *ud;
1022
1023 /* Work out where the cursor currently is. */
1024 idx = c->prompt_index;
1025 if (idx != 0)
1026 idx--;
1027 size = utf8_strlen(c->prompt_buffer);
1028
1029 /* Find the word we are in. */
1030 first = &c->prompt_buffer[idx];
1031 while (first > c->prompt_buffer && !status_prompt_space(first))
1032 first--;
1033 while (first->size != 0 && status_prompt_space(first))
1034 first++;
1035 last = &c->prompt_buffer[idx];
1036 while (last->size != 0 && !status_prompt_space(last))
1037 last++;
1038 while (last > c->prompt_buffer && status_prompt_space(last))
1039 last--;
1040 if (last->size != 0)
1041 last++;
1042 if (last < first)
1043 return (0);
1044 if (s == NULL) {
1045 used = 0;
1046 for (ud = first; ud < last; ud++) {
1047 if (used + ud->size >= sizeof word)
1048 break;
1049 memcpy(word + used, ud->data, ud->size);
1050 used += ud->size;
1051 }
1052 if (ud != last)
1053 return (0);
1054 word[used] = '\0';
1055 }
1056
1057 /* Try to complete it. */
1058 if (s == NULL) {
1059 allocated = status_prompt_complete(c, word,
1060 first - c->prompt_buffer);
1061 if (allocated == NULL)
1062 return (0);
1063 s = allocated;
1064 }
1065
1066 /* Trim out word. */
1067 n = size - (last - c->prompt_buffer) + 1; /* with \0 */
1068 memmove(first, last, n * sizeof *c->prompt_buffer);
1069 size -= last - first;
1070
1071 /* Insert the new word. */
1072 size += strlen(s);
1073 off = first - c->prompt_buffer;
1074 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1,
1075 sizeof *c->prompt_buffer);
1076 first = c->prompt_buffer + off;
1077 memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer);
1078 for (idx = 0; idx < strlen(s); idx++)
1079 utf8_set(&first[idx], s[idx]);
1080 c->prompt_index = (first - c->prompt_buffer) + strlen(s);
1081
1082 free(allocated);
1083 return (1);
1084 }
1085
1086 /* Prompt forward to the next beginning of a word. */
1087 static void
1088 status_prompt_forward_word(struct client *c, size_t size, int vi,
1089 const char *separators)
1090 {
1091 size_t idx = c->prompt_index;
1092 int word_is_separators;
1093
1094 /* In emacs mode, skip until the first non-whitespace character. */
1095 if (!vi)
1096 while (idx != size &&
1097 status_prompt_space(&c->prompt_buffer[idx]))
1098 idx++;
1099
1100 /* Can't move forward if we're already at the end. */
1101 if (idx == size) {
1102 c->prompt_index = idx;
1103 return;
1104 }
1105
1106 /* Determine the current character class (separators or not). */
1107 word_is_separators = status_prompt_in_list(separators,
1108 &c->prompt_buffer[idx]) &&
1109 !status_prompt_space(&c->prompt_buffer[idx]);
1110
1111 /* Skip ahead until the first space or opposite character class. */
1112 do {
1113 idx++;
1114 if (status_prompt_space(&c->prompt_buffer[idx])) {
1115 /* In vi mode, go to the start of the next word. */
1116 if (vi)
1117 while (idx != size &&
1118 status_prompt_space(&c->prompt_buffer[idx]))
1119 idx++;
1120 break;
1121 }
1122 } while (idx != size && word_is_separators == status_prompt_in_list(
1123 separators, &c->prompt_buffer[idx]));
1124
1125 c->prompt_index = idx;
1126 }
1127
1128 /* Prompt forward to the next end of a word. */
1129 static void
1130 status_prompt_end_word(struct client *c, size_t size, const char *separators)
1131 {
1132 size_t idx = c->prompt_index;
1133 int word_is_separators;
1134
1135 /* Can't move forward if we're already at the end. */
1136 if (idx == size)
1137 return;
1138
1139 /* Find the next word. */
1140 do {
1141 idx++;
1142 if (idx == size) {
1143 c->prompt_index = idx;
1144 return;
1145 }
1146 } while (status_prompt_space(&c->prompt_buffer[idx]));
1147
1148 /* Determine the character class (separators or not). */
1149 word_is_separators = status_prompt_in_list(separators,
1150 &c->prompt_buffer[idx]);
1151
1152 /* Skip ahead until the next space or opposite character class. */
1153 do {
1154 idx++;
1155 if (idx == size)
1156 break;
1157 } while (!status_prompt_space(&c->prompt_buffer[idx]) &&
1158 word_is_separators == status_prompt_in_list(separators,
1159 &c->prompt_buffer[idx]));
1160
1161 /* Back up to the previous character to stop at the end of the word. */
1162 c->prompt_index = idx - 1;
1163 }
1164
1165 /* Prompt backward to the previous beginning of a word. */
1166 static void
1167 status_prompt_backward_word(struct client *c, const char *separators)
1168 {
1169 size_t idx = c->prompt_index;
1170 int word_is_separators;
1171
1172 /* Find non-whitespace. */
1173 while (idx != 0) {
1174 --idx;
1175 if (!status_prompt_space(&c->prompt_buffer[idx]))
1176 break;
1177 }
1178 word_is_separators = status_prompt_in_list(separators,
1179 &c->prompt_buffer[idx]);
1180
1181 /* Find the character before the beginning of the word. */
1182 while (idx != 0) {
1183 --idx;
1184 if (status_prompt_space(&c->prompt_buffer[idx]) ||
1185 word_is_separators != status_prompt_in_list(separators,
1186 &c->prompt_buffer[idx])) {
1187 /* Go back to the word. */
1188 idx++;
1189 break;
1190 }
1191 }
1192 c->prompt_index = idx;
1193 }
1194
1195 /* Handle keys in prompt. */
1196 int
1197 status_prompt_key(struct client *c, key_code key)
1198 {
1199 struct options *oo = c->session->options;
1200 char *s, *cp, prefix = '=';
1201 const char *histstr, *separators = NULL, *keystring;
1202 size_t size, idx;
1203 struct utf8_data tmp;
1204 int keys, word_is_separators;
1205
1206 if (c->prompt_flags & PROMPT_KEY) {
1207 keystring = key_string_lookup_key(key, 0);
1208 c->prompt_inputcb(c, c->prompt_data, keystring, 1);
1209 status_prompt_clear(c);
1210 return (0);
1211 }
1212 size = utf8_strlen(c->prompt_buffer);
1213
1214 if (c->prompt_flags & PROMPT_NUMERIC) {
1215 if (key >= '0' && key <= '9')
1216 goto append_key;
1217 s = utf8_tocstr(c->prompt_buffer);
1218 c->prompt_inputcb(c, c->prompt_data, s, 1);
1219 status_prompt_clear(c);
1220 free(s);
1221 return (1);
1222 }
1223 key &= ~KEYC_MASK_FLAGS;
1224
1225 keys = options_get_number(c->session->options, "status-keys");
1226 if (keys == MODEKEY_VI) {
1227 switch (status_prompt_translate_key(c, key, &key)) {
1228 case 1:
1229 goto process_key;
1230 case 2:
1231 goto append_key;
1232 default:
1233 return (0);
1234 }
1235 }
1236
1237 process_key:
1238 switch (key) {
1239 case KEYC_LEFT:
1240 case '\002': /* C-b */
1241 if (c->prompt_index > 0) {
1242 c->prompt_index--;
1243 break;
1244 }
1245 break;
1246 case KEYC_RIGHT:
1247 case '\006': /* C-f */
1248 if (c->prompt_index < size) {
1249 c->prompt_index++;
1250 break;
1251 }
1252 break;
1253 case KEYC_HOME:
1254 case '\001': /* C-a */
1255 if (c->prompt_index != 0) {
1256 c->prompt_index = 0;
1257 break;
1258 }
1259 break;
1260 case KEYC_END:
1261 case '\005': /* C-e */
1262 if (c->prompt_index != size) {
1263 c->prompt_index = size;
1264 break;
1265 }
1266 break;
1267 case '\011': /* Tab */
1268 if (status_prompt_replace_complete(c, NULL))
1269 goto changed;
1270 break;
1271 case KEYC_BSPACE:
1272 case '\010': /* C-h */
1273 if (c->prompt_index != 0) {
1274 if (c->prompt_index == size)
1275 c->prompt_buffer[--c->prompt_index].size = 0;
1276 else {
1277 memmove(c->prompt_buffer + c->prompt_index - 1,
1278 c->prompt_buffer + c->prompt_index,
1279 (size + 1 - c->prompt_index) *
1280 sizeof *c->prompt_buffer);
1281 c->prompt_index--;
1282 }
1283 goto changed;
1284 }
1285 break;
1286 case KEYC_DC:
1287 case '\004': /* C-d */
1288 if (c->prompt_index != size) {
1289 memmove(c->prompt_buffer + c->prompt_index,
1290 c->prompt_buffer + c->prompt_index + 1,
1291 (size + 1 - c->prompt_index) *
1292 sizeof *c->prompt_buffer);
1293 goto changed;
1294 }
1295 break;
1296 case '\025': /* C-u */
1297 c->prompt_buffer[0].size = 0;
1298 c->prompt_index = 0;
1299 goto changed;
1300 case '\013': /* C-k */
1301 if (c->prompt_index < size) {
1302 c->prompt_buffer[c->prompt_index].size = 0;
1303 goto changed;
1304 }
1305 break;
1306 case '\027': /* C-w */
1307 separators = options_get_string(oo, "word-separators");
1308 idx = c->prompt_index;
1309
1310 /* Find non-whitespace. */
1311 while (idx != 0) {
1312 idx--;
1313 if (!status_prompt_space(&c->prompt_buffer[idx]))
1314 break;
1315 }
1316 word_is_separators = status_prompt_in_list(separators,
1317 &c->prompt_buffer[idx]);
1318
1319 /* Find the character before the beginning of the word. */
1320 while (idx != 0) {
1321 idx--;
1322 if (status_prompt_space(&c->prompt_buffer[idx]) ||
1323 word_is_separators != status_prompt_in_list(
1324 separators, &c->prompt_buffer[idx])) {
1325 /* Go back to the word. */
1326 idx++;
1327 break;
1328 }
1329 }
1330
1331 free(c->prompt_saved);
1332 c->prompt_saved = xcalloc(sizeof *c->prompt_buffer,
1333 (c->prompt_index - idx) + 1);
1334 memcpy(c->prompt_saved, c->prompt_buffer + idx,
1335 (c->prompt_index - idx) * sizeof *c->prompt_buffer);
1336
1337 memmove(c->prompt_buffer + idx,
1338 c->prompt_buffer + c->prompt_index,
1339 (size + 1 - c->prompt_index) *
1340 sizeof *c->prompt_buffer);
1341 memset(c->prompt_buffer + size - (c->prompt_index - idx),
1342 '\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer);
1343 c->prompt_index = idx;
1344
1345 goto changed;
1346 case KEYC_RIGHT|KEYC_CTRL:
1347 case 'f'|KEYC_META:
1348 separators = options_get_string(oo, "word-separators");
1349 status_prompt_forward_word(c, size, 0, separators);
1350 goto changed;
1351 case 'E'|KEYC_VI:
1352 status_prompt_end_word(c, size, "");
1353 goto changed;
1354 case 'e'|KEYC_VI:
1355 separators = options_get_string(oo, "word-separators");
1356 status_prompt_end_word(c, size, separators);
1357 goto changed;
1358 case 'W'|KEYC_VI:
1359 status_prompt_forward_word(c, size, 1, "");
1360 goto changed;
1361 case 'w'|KEYC_VI:
1362 separators = options_get_string(oo, "word-separators");
1363 status_prompt_forward_word(c, size, 1, separators);
1364 goto changed;
1365 case 'B'|KEYC_VI:
1366 status_prompt_backward_word(c, "");
1367 goto changed;
1368 case KEYC_LEFT|KEYC_CTRL:
1369 case 'b'|KEYC_META:
1370 separators = options_get_string(oo, "word-separators");
1371 status_prompt_backward_word(c, separators);
1372 goto changed;
1373 case KEYC_UP:
1374 case '\020': /* C-p */
1375 histstr = status_prompt_up_history(c->prompt_hindex,
1376 c->prompt_type);
1377 if (histstr == NULL)
1378 break;
1379 free(c->prompt_buffer);
1380 c->prompt_buffer = utf8_fromcstr(histstr);
1381 c->prompt_index = utf8_strlen(c->prompt_buffer);
1382 goto changed;
1383 case KEYC_DOWN:
1384 case '\016': /* C-n */
1385 histstr = status_prompt_down_history(c->prompt_hindex,
1386 c->prompt_type);
1387 if (histstr == NULL)
1388 break;
1389 free(c->prompt_buffer);
1390 c->prompt_buffer = utf8_fromcstr(histstr);
1391 c->prompt_index = utf8_strlen(c->prompt_buffer);
1392 goto changed;
1393 case '\031': /* C-y */
1394 if (status_prompt_paste(c))
1395 goto changed;
1396 break;
1397 case '\024': /* C-t */
1398 idx = c->prompt_index;
1399 if (idx < size)
1400 idx++;
1401 if (idx >= 2) {
1402 utf8_copy(&tmp, &c->prompt_buffer[idx - 2]);
1403 utf8_copy(&c->prompt_buffer[idx - 2],
1404 &c->prompt_buffer[idx - 1]);
1405 utf8_copy(&c->prompt_buffer[idx - 1], &tmp);
1406 c->prompt_index = idx;
1407 goto changed;
1408 }
1409 break;
1410 case '\r':
1411 case '\n':
1412 s = utf8_tocstr(c->prompt_buffer);
1413 if (*s != '\0')
1414 status_prompt_add_history(s, c->prompt_type);
1415 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
1416 status_prompt_clear(c);
1417 free(s);
1418 break;
1419 case '\033': /* Escape */
1420 case '\003': /* C-c */
1421 case '\007': /* C-g */
1422 if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)
1423 status_prompt_clear(c);
1424 break;
1425 case '\022': /* C-r */
1426 if (~c->prompt_flags & PROMPT_INCREMENTAL)
1427 break;
1428 if (c->prompt_buffer[0].size == 0) {
1429 prefix = '=';
1430 free(c->prompt_buffer);
1431 c->prompt_buffer = utf8_fromcstr(c->prompt_last);
1432 c->prompt_index = utf8_strlen(c->prompt_buffer);
1433 } else
1434 prefix = '-';
1435 goto changed;
1436 case '\023': /* C-s */
1437 if (~c->prompt_flags & PROMPT_INCREMENTAL)
1438 break;
1439 if (c->prompt_buffer[0].size == 0) {
1440 prefix = '=';
1441 free(c->prompt_buffer);
1442 c->prompt_buffer = utf8_fromcstr(c->prompt_last);
1443 c->prompt_index = utf8_strlen(c->prompt_buffer);
1444 } else
1445 prefix = '+';
1446 goto changed;
1447 default:
1448 goto append_key;
1449 }
1450
1451 c->flags |= CLIENT_REDRAWSTATUS;
1452 return (0);
1453
1454 append_key:
1455 if (key <= 0x1f || (key >= KEYC_BASE && key < KEYC_BASE_END))
1456 return (0);
1457 if (key <= 0x7f)
1458 utf8_set(&tmp, key);
1459 else if (KEYC_IS_UNICODE(key))
1460 utf8_to_data(key, &tmp);
1461 else
1462 return (0);
1463
1464 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2,
1465 sizeof *c->prompt_buffer);
1466
1467 if (c->prompt_index == size) {
1468 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
1469 c->prompt_index++;
1470 c->prompt_buffer[c->prompt_index].size = 0;
1471 } else {
1472 memmove(c->prompt_buffer + c->prompt_index + 1,
1473 c->prompt_buffer + c->prompt_index,
1474 (size + 1 - c->prompt_index) *
1475 sizeof *c->prompt_buffer);
1476 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
1477 c->prompt_index++;
1478 }
1479
1480 if (c->prompt_flags & PROMPT_SINGLE) {
1481 if (utf8_strlen(c->prompt_buffer) != 1)
1482 status_prompt_clear(c);
1483 else {
1484 s = utf8_tocstr(c->prompt_buffer);
1485 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
1486 status_prompt_clear(c);
1487 free(s);
1488 }
1489 }
1490
1491 changed:
1492 c->flags |= CLIENT_REDRAWSTATUS;
1493 if (c->prompt_flags & PROMPT_INCREMENTAL) {
1494 s = utf8_tocstr(c->prompt_buffer);
1495 xasprintf(&cp, "%c%s", prefix, s);
1496 c->prompt_inputcb(c, c->prompt_data, cp, 0);
1497 free(cp);
1498 free(s);
1499 }
1500 return (0);
1501 }
1502
1503 /* Get previous line from the history. */
1504 static const char *
1505 status_prompt_up_history(u_int *idx, u_int type)
1506 {
1507 /*
1508 * History runs from 0 to size - 1. Index is from 0 to size. Zero is
1509 * empty.
1510 */
1511
1512 if (status_prompt_hsize[type] == 0 ||
1513 idx[type] == status_prompt_hsize[type])
1514 return (NULL);
1515 idx[type]++;
1516 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
1517 }
1518
1519 /* Get next line from the history. */
1520 static const char *
1521 status_prompt_down_history(u_int *idx, u_int type)
1522 {
1523 if (status_prompt_hsize[type] == 0 || idx[type] == 0)
1524 return ("");
1525 idx[type]--;
1526 if (idx[type] == 0)
1527 return ("");
1528 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
1529 }
1530
1531 /* Add line to the history. */
1532 static void
1533 status_prompt_add_history(const char *line, u_int type)
1534 {
1535 u_int i, oldsize, newsize, freecount, hlimit, new = 1;
1536 size_t movesize;
1537
1538 oldsize = status_prompt_hsize[type];
1539 if (oldsize > 0 &&
1540 strcmp(status_prompt_hlist[type][oldsize - 1], line) == 0)
1541 new = 0;
1542
1543 hlimit = options_get_number(global_options, "prompt-history-limit");
1544 if (hlimit > oldsize) {
1545 if (new == 0)
1546 return;
1547 newsize = oldsize + new;
1548 } else {
1549 newsize = hlimit;
1550 freecount = oldsize + new - newsize;
1551 if (freecount > oldsize)
1552 freecount = oldsize;
1553 if (freecount == 0)
1554 return;
1555 for (i = 0; i < freecount; i++)
1556 free(status_prompt_hlist[type][i]);
1557 movesize = (oldsize - freecount) *
1558 sizeof *status_prompt_hlist[type];
1559 if (movesize > 0) {
1560 memmove(&status_prompt_hlist[type][0],
1561 &status_prompt_hlist[type][freecount], movesize);
1562 }
1563 }
1564
1565 if (newsize == 0) {
1566 free(status_prompt_hlist[type]);
1567 status_prompt_hlist[type] = NULL;
1568 } else if (newsize != oldsize) {
1569 status_prompt_hlist[type] =
1570 xreallocarray(status_prompt_hlist[type], newsize,
1571 sizeof *status_prompt_hlist[type]);
1572 }
1573
1574 if (new == 1 && newsize > 0)
1575 status_prompt_hlist[type][newsize - 1] = xstrdup(line);
1576 status_prompt_hsize[type] = newsize;
1577 }
1578
1579 /* Add to completion list. */
1580 static void
1581 status_prompt_add_list(char ***list, u_int *size, const char *s)
1582 {
1583 u_int i;
1584
1585 for (i = 0; i < *size; i++) {
1586 if (strcmp((*list)[i], s) == 0)
1587 return;
1588 }
1589 *list = xreallocarray(*list, (*size) + 1, sizeof **list);
1590 (*list)[(*size)++] = xstrdup(s);
1591 }
1592
1593 /* Build completion list. */
1594 static char **
1595 status_prompt_complete_list(u_int *size, const char *s, int at_start)
1596 {
1597 char **list = NULL, *tmp;
1598 const char **layout, *value, *cp;
1599 const struct cmd_entry **cmdent;
1600 const struct options_table_entry *oe;
1601 size_t slen = strlen(s), valuelen;
1602 struct options_entry *o;
1603 struct options_array_item *a;
1604 const char *layouts[] = {
1605 "even-horizontal", "even-vertical", "main-horizontal",
1606 "main-vertical", "tiled", NULL
1607 };
1608
1609 *size = 0;
1610 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
1611 if (strncmp((*cmdent)->name, s, slen) == 0)
1612 status_prompt_add_list(&list, size, (*cmdent)->name);
1613 if ((*cmdent)->alias != NULL &&
1614 strncmp((*cmdent)->alias, s, slen) == 0)
1615 status_prompt_add_list(&list, size, (*cmdent)->alias);
1616 }
1617 o = options_get_only(global_options, "command-alias");
1618 if (o != NULL) {
1619 a = options_array_first(o);
1620 while (a != NULL) {
1621 value = options_array_item_value(a)->string;
1622 if ((cp = strchr(value, '=')) == NULL)
1623 goto next;
1624 valuelen = cp - value;
1625 if (slen > valuelen || strncmp(value, s, slen) != 0)
1626 goto next;
1627
1628 xasprintf(&tmp, "%.*s", (int)valuelen, value);
1629 status_prompt_add_list(&list, size, tmp);
1630 free(tmp);
1631
1632 next:
1633 a = options_array_next(a);
1634 }
1635 }
1636 if (at_start)
1637 return (list);
1638 for (oe = options_table; oe->name != NULL; oe++) {
1639 if (strncmp(oe->name, s, slen) == 0)
1640 status_prompt_add_list(&list, size, oe->name);
1641 }
1642 for (layout = layouts; *layout != NULL; layout++) {
1643 if (strncmp(*layout, s, slen) == 0)
1644 status_prompt_add_list(&list, size, *layout);
1645 }
1646 return (list);
1647 }
1648
1649 /* Find longest prefix. */
1650 static char *
1651 status_prompt_complete_prefix(char **list, u_int size)
1652 {
1653 char *out;
1654 u_int i;
1655 size_t j;
1656
1657 if (list == NULL || size == 0)
1658 return (NULL);
1659 out = xstrdup(list[0]);
1660 for (i = 1; i < size; i++) {
1661 j = strlen(list[i]);
1662 if (j > strlen(out))
1663 j = strlen(out);
1664 for (; j > 0; j--) {
1665 if (out[j - 1] != list[i][j - 1])
1666 out[j - 1] = '\0';
1667 }
1668 }
1669 return (out);
1670 }
1671
1672 /* Complete word menu callback. */
1673 static void
1674 status_prompt_menu_callback(__unused struct menu *menu, u_int idx, key_code key,
1675 void *data)
1676 {
1677 struct status_prompt_menu *spm = data;
1678 struct client *c = spm->c;
1679 u_int i;
1680 char *s;
1681
1682 if (key != KEYC_NONE) {
1683 idx += spm->start;
1684 if (spm->flag == '\0')
1685 s = xstrdup(spm->list[idx]);
1686 else
1687 xasprintf(&s, "-%c%s", spm->flag, spm->list[idx]);
1688 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1689 free(c->prompt_buffer);
1690 c->prompt_buffer = utf8_fromcstr(s);
1691 c->prompt_index = utf8_strlen(c->prompt_buffer);
1692 c->flags |= CLIENT_REDRAWSTATUS;
1693 } else if (status_prompt_replace_complete(c, s))
1694 c->flags |= CLIENT_REDRAWSTATUS;
1695 free(s);
1696 }
1697
1698 for (i = 0; i < spm->size; i++)
1699 free(spm->list[i]);
1700 free(spm->list);
1701 }
1702
1703 /* Show complete word menu. */
1704 static int
1705 status_prompt_complete_list_menu(struct client *c, char **list, u_int size,
1706 u_int offset, char flag)
1707 {
1708 struct menu *menu;
1709 struct menu_item item;
1710 struct status_prompt_menu *spm;
1711 u_int lines = status_line_size(c), height, i;
1712 u_int py;
1713
1714 if (size <= 1)
1715 return (0);
1716 if (c->tty.sy - lines < 3)
1717 return (0);
1718
1719 spm = xmalloc(sizeof *spm);
1720 spm->c = c;
1721 spm->size = size;
1722 spm->list = list;
1723 spm->flag = flag;
1724
1725 height = c->tty.sy - lines - 2;
1726 if (height > 10)
1727 height = 10;
1728 if (height > size)
1729 height = size;
1730 spm->start = size - height;
1731
1732 menu = menu_create("");
1733 for (i = spm->start; i < size; i++) {
1734 item.name = list[i];
1735 item.key = '0' + (i - spm->start);
1736 item.command = NULL;
1737 menu_add_item(menu, &item, NULL, c, NULL);
1738 }
1739
1740 if (options_get_number(c->session->options, "status-position") == 0)
1741 py = lines;
1742 else
1743 py = c->tty.sy - 3 - height;
1744 offset += utf8_cstrwidth(c->prompt_string);
1745 if (offset > 2)
1746 offset -= 2;
1747 else
1748 offset = 0;
1749
1750 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, NULL, offset,
1751 py, c, NULL, status_prompt_menu_callback, spm) != 0) {
1752 menu_free(menu);
1753 free(spm);
1754 return (0);
1755 }
1756 return (1);
1757 }
1758
1759 /* Show complete word menu. */
1760 static char *
1761 status_prompt_complete_window_menu(struct client *c, struct session *s,
1762 const char *word, u_int offset, char flag)
1763 {
1764 struct menu *menu;
1765 struct menu_item item;
1766 struct status_prompt_menu *spm;
1767 struct winlink *wl;
1768 char **list = NULL, *tmp;
1769 u_int lines = status_line_size(c), height;
1770 u_int py, size = 0;
1771
1772 if (c->tty.sy - lines < 3)
1773 return (NULL);
1774
1775 spm = xmalloc(sizeof *spm);
1776 spm->c = c;
1777 spm->flag = flag;
1778
1779 height = c->tty.sy - lines - 2;
1780 if (height > 10)
1781 height = 10;
1782 spm->start = 0;
1783
1784 menu = menu_create("");
1785 RB_FOREACH(wl, winlinks, &s->windows) {
1786 if (word != NULL && *word != '\0') {
1787 xasprintf(&tmp, "%d", wl->idx);
1788 if (strncmp(tmp, word, strlen(word)) != 0) {
1789 free(tmp);
1790 continue;
1791 }
1792 free(tmp);
1793 }
1794
1795 list = xreallocarray(list, size + 1, sizeof *list);
1796 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1797 xasprintf(&tmp, "%d (%s)", wl->idx, wl->window->name);
1798 xasprintf(&list[size++], "%d", wl->idx);
1799 } else {
1800 xasprintf(&tmp, "%s:%d (%s)", s->name, wl->idx,
1801 wl->window->name);
1802 xasprintf(&list[size++], "%s:%d", s->name, wl->idx);
1803 }
1804 item.name = tmp;
1805 item.key = '0' + size - 1;
1806 item.command = NULL;
1807 menu_add_item(menu, &item, NULL, c, NULL);
1808 free(tmp);
1809
1810 if (size == height)
1811 break;
1812 }
1813 if (size == 0) {
1814 menu_free(menu);
1815 return (NULL);
1816 }
1817 if (size == 1) {
1818 menu_free(menu);
1819 if (flag != '\0') {
1820 xasprintf(&tmp, "-%c%s", flag, list[0]);
1821 free(list[0]);
1822 } else
1823 tmp = list[0];
1824 free(list);
1825 return (tmp);
1826 }
1827 if (height > size)
1828 height = size;
1829
1830 spm->size = size;
1831 spm->list = list;
1832
1833 if (options_get_number(c->session->options, "status-position") == 0)
1834 py = lines;
1835 else
1836 py = c->tty.sy - 3 - height;
1837 offset += utf8_cstrwidth(c->prompt_string);
1838 if (offset > 2)
1839 offset -= 2;
1840 else
1841 offset = 0;
1842
1843 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, NULL, offset,
1844 py, c, NULL, status_prompt_menu_callback, spm) != 0) {
1845 menu_free(menu);
1846 free(spm);
1847 return (NULL);
1848 }
1849 return (NULL);
1850 }
1851
1852 /* Sort complete list. */
1853 static int
1854 status_prompt_complete_sort(const void *a, const void *b)
1855 {
1856 const char **aa = (const char **)a, **bb = (const char **)b;
1857
1858 return (strcmp(*aa, *bb));
1859 }
1860
1861 /* Complete a session. */
1862 static char *
1863 status_prompt_complete_session(char ***list, u_int *size, const char *s,
1864 char flag)
1865 {
1866 struct session *loop;
1867 char *out, *tmp, n[11];
1868
1869 RB_FOREACH(loop, sessions, &sessions) {
1870 if (*s == '\0' || strncmp(loop->name, s, strlen(s)) == 0) {
1871 *list = xreallocarray(*list, (*size) + 2,
1872 sizeof **list);
1873 xasprintf(&(*list)[(*size)++], "%s:", loop->name);
1874 } else if (*s == '$') {
1875 xsnprintf(n, sizeof n, "%u", loop->id);
1876 if (s[1] == '\0' ||
1877 strncmp(n, s + 1, strlen(s) - 1) == 0) {
1878 *list = xreallocarray(*list, (*size) + 2,
1879 sizeof **list);
1880 xasprintf(&(*list)[(*size)++], "$%s:", n);
1881 }
1882 }
1883 }
1884 out = status_prompt_complete_prefix(*list, *size);
1885 if (out != NULL && flag != '\0') {
1886 xasprintf(&tmp, "-%c%s", flag, out);
1887 free(out);
1888 out = tmp;
1889 }
1890 return (out);
1891 }
1892
1893 /* Complete word. */
1894 static char *
1895 status_prompt_complete(struct client *c, const char *word, u_int offset)
1896 {
1897 struct session *session;
1898 const char *s, *colon;
1899 char **list = NULL, *copy = NULL, *out = NULL;
1900 char flag = '\0';
1901 u_int size = 0, i;
1902
1903 if (*word == '\0' &&
1904 c->prompt_type != PROMPT_TYPE_TARGET &&
1905 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET)
1906 return (NULL);
1907
1908 if (c->prompt_type != PROMPT_TYPE_TARGET &&
1909 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET &&
1910 strncmp(word, "-t", 2) != 0 &&
1911 strncmp(word, "-s", 2) != 0) {
1912 list = status_prompt_complete_list(&size, word, offset == 0);
1913 if (size == 0)
1914 out = NULL;
1915 else if (size == 1)
1916 xasprintf(&out, "%s ", list[0]);
1917 else
1918 out = status_prompt_complete_prefix(list, size);
1919 goto found;
1920 }
1921
1922 if (c->prompt_type == PROMPT_TYPE_TARGET ||
1923 c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1924 s = word;
1925 flag = '\0';
1926 } else {
1927 s = word + 2;
1928 flag = word[1];
1929 offset += 2;
1930 }
1931
1932 /* If this is a window completion, open the window menu. */
1933 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1934 out = status_prompt_complete_window_menu(c, c->session, s,
1935 offset, '\0');
1936 goto found;
1937 }
1938 colon = strchr(s, ':');
1939
1940 /* If there is no colon, complete as a session. */
1941 if (colon == NULL) {
1942 out = status_prompt_complete_session(&list, &size, s, flag);
1943 goto found;
1944 }
1945
1946 /* If there is a colon but no period, find session and show a menu. */
1947 if (strchr(colon + 1, '.') == NULL) {
1948 if (*s == ':')
1949 session = c->session;
1950 else {
1951 copy = xstrdup(s);
1952 *strchr(copy, ':') = '\0';
1953 session = session_find(copy);
1954 free(copy);
1955 if (session == NULL)
1956 goto found;
1957 }
1958 out = status_prompt_complete_window_menu(c, session, colon + 1,
1959 offset, flag);
1960 if (out == NULL)
1961 return (NULL);
1962 }
1963
1964 found:
1965 if (size != 0) {
1966 qsort(list, size, sizeof *list, status_prompt_complete_sort);
1967 for (i = 0; i < size; i++)
1968 log_debug("complete %u: %s", i, list[i]);
1969 }
1970
1971 if (out != NULL && strcmp(word, out) == 0) {
1972 free(out);
1973 out = NULL;
1974 }
1975 if (out != NULL ||
1976 !status_prompt_complete_list_menu(c, list, size, offset, flag)) {
1977 for (i = 0; i < size; i++)
1978 free(list[i]);
1979 free(list);
1980 }
1981 return (out);
1982 }
1983
1984 /* Return the type of the prompt as an enum. */
1985 enum prompt_type
1986 status_prompt_type(const char *type)
1987 {
1988 u_int i;
1989
1990 for (i = 0; i < PROMPT_NTYPES; i++) {
1991 if (strcmp(type, status_prompt_type_string(i)) == 0)
1992 return (i);
1993 }
1994 return (PROMPT_TYPE_INVALID);
1995 }
1996
1997 /* Accessor for prompt_type_strings. */
1998 const char *
1999 status_prompt_type_string(u_int type)
2000 {
2001 if (type >= PROMPT_NTYPES)
2002 return ("invalid");
2003 return (prompt_type_strings[type]);
2004 }
tmux -- terminal multiplexer similar to GNU Screen